Peer-reviewed veterinary case report
Exophthalmia associated with paranasal sinus osteoma in a Quarterhorse mare.
- Journal:
- Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc
- Year:
- 2004
- Authors:
- Scotty, Nicole C et al.
- Affiliation:
- Department of Veterinary Medicine and Surgery · United States
- Species:
- horse
Plain-English summary
An 11-year-old Quarterhorse mare had a growth called a paranasal sinus osteoma, which is a type of bone tumor in the sinuses. This tumor grew into the area behind her right eye, causing that eye to bulge out. The veterinarians used imaging tests to see the tumor and even looked inside her nose to check how far it had spread. They took samples of the tumor for testing, but they could only confirm it was an osteoma after the mare passed away and a detailed examination was done. Unfortunately, the treatment did not work, as the diagnosis was only made after her death.
Abstract
An 11-year-old Quarterhorse mare developed a paranasal sinus osteoma that extended into the right orbit and led to ipsilateral exophthalmia. Although the tumor was radiographically evident in the paranasal sinuses, ultrasonography was used to demonstrate extension of the tumor into the retrobulbar space, and endoscopy was used to identify its extension into the nasopharynx. Biopsies were obtained using both fine-needle aspiration and paranasal sinus trephination. Despite numerous antemortem diagnostic tests, only postmortem histologic analysis of the mass afforded the diagnosis of osteoma.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/15053369/